Flora of North America species comparison

18–50 cm.

5–35 cm.

sheath adaxially white-hyaline, summits U-shaped to rounded, occasionally prolonged to 4 mm beyond collar;

distal ligules 0.5–1.5(–2) mm;

blades 3–4(–6) per fertile culm, 11–26 cm × 2.8–4 mm.

basal;

proximal leaves with blades 5–6 mm wide.

dense, dark brown, 1.5–3 cm × 14–20 mm;

proximal internode 1.5–3 mm; 2d internode 1–3.5 mm;

proximal bracts scalelike, usually bristlelike, shorter than inflorescences.

spikes approximate, oblong to elongate, 8–25 × 3–8 mm;

proximal spike separate, sometimes pendent and long-pedunculate;

lateral spikes 2–4;

distal spikes erect, short-pedunculate.

(4–)6–12, aggregated, individually indistinct, ovoid, 9–15 × 4.5–6.5 mm, base and apex acute to rounded.

appressed to ascending, green, gold, or brown, conspicuously usually 7–9-veined abaxially, conspicuously 0–5-veined adaxially, veins shorter than achene, lanceolate to ovate, plano-convex, to 5.3–7.1 × 1.1–1.5 mm, 0.4–0.5 mm thick, margin flat, including wing 0.15–0.3 mm wide, ciliate-serrulate at least on distal body;

beak dark brown, sometimes gold-hyaline at tip, cylindric, unwinged, ± entire for 0.9–1.5 mm, dorsal suture inconspicuous or with conspicuous white margin, distance from beak tip to achene 2.9–4 mm.

veinless, ovate, 3-5–4 × 1.5–2 mm, papillose;

beak 0.3–0.5 mm, shallowly bidentate or truncate, sparsely papillose or smooth.

ovate to obovate, 1.5–1.9 × 0.8–1.1 mm, 0.4–0.5 mm thick.

scales dark brown, red-brown, or red-gold, sometimes with green to gold midstripe, ovate, 3.6–4.7 mm, shorter than and narrower or as wide as perigynia, margin gold-hyaline, to 0.3 mm wide, apex acuminate or acute.

scales dark brown to black, ovate or lanceolate, equaling and as wide as perigynia, apex acute or mucronate.

= 84.